/usr/lib/ocaml/char.ml is in ocaml-nox 4.05.0-10ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(* *)
(* OCaml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. *)
(* *)
(* All rights reserved. This file is distributed under the terms of *)
(* the GNU Lesser General Public License version 2.1, with the *)
(* special exception on linking described in the file LICENSE. *)
(* *)
(**************************************************************************)
(* Character operations *)
external code: char -> int = "%identity"
external unsafe_chr: int -> char = "%identity"
let chr n =
if n < 0 || n > 255 then invalid_arg "Char.chr" else unsafe_chr n
external bytes_create: int -> bytes = "caml_create_bytes"
external bytes_unsafe_set : bytes -> int -> char -> unit
= "%bytes_unsafe_set"
external unsafe_to_string : bytes -> string = "%bytes_to_string"
let escaped = function
| '\'' -> "\\'"
| '\\' -> "\\\\"
| '\n' -> "\\n"
| '\t' -> "\\t"
| '\r' -> "\\r"
| '\b' -> "\\b"
| ' ' .. '~' as c ->
let s = bytes_create 1 in
bytes_unsafe_set s 0 c;
unsafe_to_string s
| c ->
let n = code c in
let s = bytes_create 4 in
bytes_unsafe_set s 0 '\\';
bytes_unsafe_set s 1 (unsafe_chr (48 + n / 100));
bytes_unsafe_set s 2 (unsafe_chr (48 + (n / 10) mod 10));
bytes_unsafe_set s 3 (unsafe_chr (48 + n mod 10));
unsafe_to_string s
let lowercase c =
if (c >= 'A' && c <= 'Z')
|| (c >= '\192' && c <= '\214')
|| (c >= '\216' && c <= '\222')
then unsafe_chr(code c + 32)
else c
let uppercase c =
if (c >= 'a' && c <= 'z')
|| (c >= '\224' && c <= '\246')
|| (c >= '\248' && c <= '\254')
then unsafe_chr(code c - 32)
else c
let lowercase_ascii c =
if (c >= 'A' && c <= 'Z')
then unsafe_chr(code c + 32)
else c
let uppercase_ascii c =
if (c >= 'a' && c <= 'z')
then unsafe_chr(code c - 32)
else c
type t = char
let compare c1 c2 = code c1 - code c2
let equal (c1: t) (c2: t) = compare c1 c2 = 0
|